Hi I have a DEM that is low in resolution and want to estimate the elevation values of the spaces between the points. I understand that this is not ideal but this to put the data in machine learning software and make a better spatial match of the elevation data and other data used. I can use QGIS or ArcGIS to do that if you can guide. Thanks ZS
Asked
Active
Viewed 55 times
1 Answers
0
A DEM is a a raster. There are no points, however you can create a center point for each DEM raster cell using the arcmap tool "Raster to Points" if the raster is large, this could take a long time.
At this point there are multiple algorithms that can be used to interpolate between the points. Look into surfaces.
From above link: "There are several ways to create surfaces, including interpolating values stored at measured point locations, interpolating a surface of the density of a given phenomenon or feature type from the numbers of features in an area, deriving surfaces of distance (or direction) from a feature or features, or deriving a surface from another surface (slope raster from elevation)."
Once you decide what interpolation you want to apply and you create an interpolated raster you can export it to a new DEM with a higher resolution.
In the future you would probably get better/facter results posting this question to the GIS Stack exchange. https://gis.stackexchange.com/
AliWieckowicz
- 549
- 1
- 4
- 17